[pgrouting-users] routing_core_smart problem

[Stephen Woodbridge]

Hi Daniel,

Who wrote the routing_core_smart.sql functions?
Is there any documentation of them? It would be nice if we had:
1. description of the major public entry points and what the arguments 
should be.
2. comments in the code that explain what the overview strategy is 
and/or a high level pseudocode of how it executes

Thanks,
   -Steve

On 12/2/2011 9:57 PM, Daniel Kastl wrote:
> Hi Lutz,
>
> Thank you very much for sharing this information!
> I have also created this ticket:
> https://github.com/pgRouting/pgrouting-contrib/issues/3
>
> So you're talking about the following two lines?
>
>   * Line 191
>     https://github.com/pgRouting/pgrouting-contrib/blob/master/wrapper/routing_core_smart.sql#L191
>   * Line 205
>     https://github.com/pgRouting/pgrouting-contrib/blob/master/wrapper/routing_core_smart.sql#L205
>
> Best regards,
> Daniel
>
>
> On Sat, Dec 3, 2011 at 4:26 AM, Worth Lutz <wal3 at mindspring.com
> <mailto:wal3 at mindspring.com>> wrote:
>
>     Hi all,
>
>     I have found what appears to be a problem in one of the
>     routing_core_smart functions.
>
>     In the function locate_point_as_geometry there are two lines which
>     call the function geometryfromtext.
>
>     These functions are called when line_substring returns a point.
>
>     In the geometryfromtext function calls, there is no second argument
>     for the srid.  This produces a geometry with a “-1” for the srid.
>
>     When I use shootingstar_smart in my script, MapServer fails on
>     trying to work with two geometries with different srids.
>
>     Adding the second argument to the geometryfromtext function fixed
>     this problem.  The only geometry with the “-1” srid was the one
>     created by these function calls.
>
>     I hope this helps someone.
>
>     Worth Lutz
>
>
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> --
> Georepublic UG & Georepublic Japan
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